A system and method for detecting the anti-pollution ability of a hydraulic valve block of a hydraulic automatic transmission

Abstract

The present invention discloses a system and method for detecting the anti-contamination capability of a hydraulic valve block in a hydraulic automatic transmission. The system comprises: a temperature control module, the input and output of which are both connected to a fuel tank; an oil supply module, the input of which is connected to a fuel tank; an oil supply module, the output of which is connected to an input of a centrifugal separation module; and an output of which is connected to a pollutant concentration and particle size detection module. The temperature control module, the oil supply module, the centrifugal separation module, and the pollutant concentration and particle size detection module are all connected to an industrial computer. The present invention performs performance testing on the hydraulic valve block of a hydraulic unit to determine the unit's state at different temperatures and levels of contaminants. This system then specifically redesigns vulnerable parts of the hydraulic valve block to improve its anti-contamination capability.

Description

Technical Field

[0001] The invention belongs to the field of transmission detection, and relates to a system and method for detecting the anti-pollution ability of a hydraulic valve block of a hydraulic automatic transmission. Background Art

[0002] The hydraulic unit structure of a hydraulic automatic transmission offers advantages such as compactness, fast and smooth shifting, ease of automated control, and the ability to achieve infinitely variable speed regulation of the powertrain. However, its complex and sophisticated structure and high level of integration make it susceptible to external interference, leading to functional failure. Therefore, it is necessary to explore the effects of varying temperatures and levels of contaminants on the hydraulic unit. Currently, there are few dedicated test benches and test methods for testing the operating conditions of hydraulic valve blocks at different temperatures and levels of contaminants. Therefore, a system and method for testing the temperature control and contamination resistance of hydraulic valve blocks in hydraulic automatic transmissions is urgently needed. Summary of the Invention

[0003] The present invention aims to address the challenges of the prior art by providing a system and method for testing the contamination resistance of hydraulic valve blocks in hydraulic automatic transmissions. This system and method can address the operational status of hydraulic valve blocks in hydraulic automatic transmissions at varying temperatures and levels of contaminants. By performing performance tests on the hydraulic unit's valve blocks, the system's performance at varying temperatures and levels of contaminants is confirmed, allowing for targeted redesign of vulnerable areas of the hydraulic valve block to improve its contamination resistance.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A system for detecting the anti-pollution capability of a hydraulic valve block of a hydraulic automatic transmission, comprising: a temperature control module, an oil supply module, a centrifugal separation module, a pollutant concentration and particle level detection module, an oil tank, and an industrial computer;

[0006] The input and output ends of the temperature control module are both connected to the oil tank; the input end of the oil supply module is connected to the oil tank; the output end of the oil supply module is connected to the input end of the centrifugal separation module, and the output end of the centrifugal separation module is connected to the pollutant concentration and particle level detection module; the temperature control module, oil supply module, centrifugal separation module, pollutant concentration and particle level detection module are all connected to the industrial computer.

[0007] A further improvement of the present invention is:

[0008] The temperature control module includes an electric pump, a heating / cooling selection valve, a heater, a condenser, fins and an antifreeze storage tank; the inlet of the electric pump is connected to the antifreeze storage tank; the antifreeze storage tank is connected to the fins; the outlet of the electric pump is connected to the inlet of the heating / cooling selection valve; the outlet of the heating / cooling selection valve is branched, one outlet is connected to the heater, and the other outlet is connected to the condenser, and both the heater and the condenser are connected to the fins; the electric pump and the heating / cooling selection valve are connected to the industrial computer via Ethernet.

[0009] The oil supply module includes a first motor, a first oil pump, a second motor and a second oil pump; the first motor drives the first oil pump to extract oil from the oil tank; the second motor drives the second oil pump to extract oil from the oil tank; the first motor and the second motor are connected to the industrial computer via Ethernet.

[0010] The centrifugal separation module includes a first separation selection valve, a first centrifuge, a first impurity indicator, a second separation selection valve, a second centrifuge, a second impurity indicator and a proportional reversing valve;

[0011] The inlet of the first separation selection valve is connected to the first oil pump, and the outlet of the first separation selection valve is branched, one outlet being connected to the inlet of the first centrifuge; the inlet of the second separation selection valve is connected to the second oil pump, and the outlet of the second separation selection valve is branched, one outlet being connected to the inlet of the second centrifuge; the other outlet of the first separation selection valve is connected to the other outlet of the second separation selection valve, and both are connected to a proportional reversing valve;

[0012] The outlet of the first centrifuge is connected to the inlet of the first impurity indicator, the outlet of the second centrifuge is connected to the inlet of the second impurity indicator, and the outlets of the first impurity indicator and the second impurity indicator are both connected to a proportional reversing valve; the outlet of the proportional reversing valve is branched, one outlet is connected to the clean oil tank, and the other outlet is connected to the oil tank;

[0013] The first separation selection valve, the first centrifuge, the first impurity indicator, the second separation selection valve, the second centrifuge, the second impurity indicator and the proportional reversing valve are all connected to the industrial computer via Ethernet.

[0014] The pollutant concentration and particle level detection module includes a normally closed gate valve, a fine filter, a flow meter, a second spring pressed-in check valve, a pressure sensor, a solenoid switch valve, a safety valve, a solenoid reversing valve, a particle counter, a one-way throttle valve and a valve block;

[0015] The inlet of the normally closed gate valve is connected to the branch line of the proportional reversing valve connected to the oil tank, the outlet of the normally closed gate valve is connected to the inlet of the fine filter; the inlet of the flow meter is connected to the outlet of the fine filter, the inlet of the second spring press-in check valve is connected to the outlet of the flow meter; the outlet of the second spring press-in check valve is connected to the oil tank;

[0016] The electromagnetic reversing valve, particle counter, and one-way throttle valve are all located on the branch line where the proportional reversing valve is connected to the oil tank;

[0017] The inlet of the one-way throttle valve is connected to the other outlet of the proportional reversing valve; the outlet of the one-way throttle valve is connected to the inlet of the particle counter, the outlet of the particle counter is connected to the inlet of the electromagnetic reversing valve, the outlet of the electromagnetic reversing valve is branched, one outlet is connected to the oil tank; the other outlet is connected to the inlet of the valve block, and the outlet of the valve block is connected to the oil tank;

[0018] The inlet of the electromagnetic switch valve is connected to the other outlet of the proportional reversing valve, and the outlet of the electromagnetic switch valve is connected to the pressure sensor;

[0019] The safety valve is installed on the branch line connecting the proportional reversing valve to the oil tank; the outlet of the safety valve is connected to the oil tank;

[0020] The flow meter, pressure sensor, solenoid switch valve, solenoid reversing valve and particle counter are all connected to the industrial computer via Ethernet.

[0021] The temperature control module also includes a filter, a mixer, a liquid level sensor and a temperature sensor; the filter is installed at the inlet of the electric pump to ensure the cleanliness of the antifreeze inside the antifreeze storage tank; the mixer is installed in the oil tank to stir the oil in the tank so that the oil is heated evenly; the liquid level sensor is located in the oil tank to detect the height of the oil in the tank; the temperature sensor is installed in the oil tank to monitor the temperature of the oil in the tank; the liquid level sensor and the temperature sensor are both connected to the industrial computer via Ethernet.

[0022] The centrifugal separation module further includes a first spring-loaded one-way valve, a third spring-loaded one-way valve, a first one-way valve, and a second one-way valve; the inlet of the first spring-loaded one-way valve is connected to the outlet of the first oil pump, and the outlet of the first spring-loaded one-way valve is connected to the inlet of the first separation selection valve; the inlet of the third spring-loaded one-way valve is connected to the outlet of the second oil pump, and the outlet of the third spring-loaded one-way valve is connected to the inlet of the second separation selection valve;

[0023] The first one-way valve is installed between the first impurity indicator and the proportional reversing valve, and the second one-way valve is installed between the second impurity indicator and the proportional reversing valve.

[0024] The centrifugal separation module also includes a clean oil pump and a third one-way valve; the outlet of the third one-way valve is connected to the oil tank; the inlet of the third one-way valve is connected to the outlet of the clean oil pump, and the inlet of the clean oil pump is connected to the clean oil tank; the clean oil pump is connected to the industrial computer via Ethernet.

[0025] A method for detecting the anti-pollution capability of a hydraulic valve block of a hydraulic automatic transmission comprises: an industrial computer receives a signal sent by a temperature control module to control the temperature of oil in a fuel tank; the industrial computer receives a signal sent by a pollutant concentration and particle level detection module to control the amount of oil provided by an oil supply module to a centrifugal separation module; the industrial computer controls the centrifugal separation module to separate oil from the oil supply module; and the industrial computer controls the pollutant concentration and particle level detection module to detect the impurity level of the oil.

[0026] It also includes: Ethernet; the industrial computer is connected to the temperature control module, the pollutant concentration and particle level detection module, the centrifugal separation module and the oil supply module via Ethernet;

[0027] The temperature control module includes an electric pump, heating / cooling selection valve, heater, condenser, fins, antifreeze storage tank, filter, mixer, liquid level sensor and temperature sensor;

[0028] The temperature is set on the industrial computer. The temperature sensor monitors the temperature of the oil in the tank and sends it to the industrial computer. The industrial computer receives the temperature signal from the temperature sensor via Ethernet, compares the temperature signal with the set temperature, opens the heating / cooling selection valve, and drives the electric pump to circulate the antifreeze stored in the antifreeze storage tank, directing the antifreeze to the heater or condenser. The heated or cooled antifreeze transfers heat to the oil in the tank through the fins placed inside the tank. The mixer stirs the oil in the tank to ensure uniform heating. The cleanliness of the antifreeze in the antifreeze storage tank is ensured by the filter.

[0029] The oil supply module includes a first motor, a first oil pump, a second motor and a second oil pump;

[0030] When the temperature in the oil tank is the same as the temperature set on the industrial computer, the industrial computer sends a shutdown command to the electric pump via Ethernet, and sends a start command to the first motor or the second motor or the first motor and the second motor at the same time, so that the first motor drives the first oil pump to extract the oil in the oil tank; or the second motor drives the second oil pump to extract the oil in the oil tank; or the first motor drives the first oil pump and the second motor drives the second oil pump together to extract the oil in the oil tank;

[0031] The centrifugal separation module includes a first separation selection valve, a first centrifuge, a first impurity indicator, a second separation selection valve, a second centrifuge, a second impurity indicator, a proportional reversing valve, a first spring-loaded check valve, a clean oil tank, a clean oil pump, a third check valve, a third spring-loaded check valve, a first check valve, and a second check valve;

[0032] The oil pumped by the first oil pump enters the first separation selection valve through the first spring-loaded one-way valve. After the first separation selection valve is closed, the oil enters the first centrifuge for separation of oil and impurities. The first impurity indicator displays the amount of impurities in the separated oil.

[0033] The oil pumped by the second oil pump enters the second separation selection valve through the third spring-loaded one-way valve. After the second separation selection valve is closed, the oil enters the second centrifuge for separation of oil and impurities. The second impurity indicator displays the value of impurities in the separated oil.

[0034] The impurity values displayed by the first impurity indicator and the second impurity indicator are uploaded to the industrial computer via Ethernet, and the industrial computer determines the level of impurity quantity. If the oil is qualified, the industrial computer sends an opening instruction to the proportional reversing valve via Ethernet, and the oil enters the proportional reversing valve through the first one-way valve or the second one-way valve or the first one-way valve and the second one-way valve and is distributed to the clean oil tank; if the oil is unqualified, the industrial computer sends a closing instruction to the proportional reversing valve and the electromagnetic reversing valve via Ethernet, and the unqualified oil enters the proportional reversing valve and the electromagnetic reversing valve through the first one-way valve or the second one-way valve or the first one-way valve and the second one-way valve and returns to the oil tank for recirculation. During the process of impurity separation of all the oil in the oil tank, the industrial computer retrieves the value of the liquid level sensor in real time via Ethernet. When a certain value is met, the industrial computer sends a command via Ethernet to start the clean oil pump and introduce the pure oil in the clean oil tank into the oil tank through the third one-way valve. During the introduction process, the third one-way valve prevents the oil from flowing back and contaminating the clean oil tank.

[0035] The pollutant concentration and particle level detection module includes a normally closed gate valve, a fine filter, a flow meter, a second spring pressed-in check valve, a pressure sensor, a solenoid switch valve, a safety valve, a solenoid reversing valve, a particle counter, a one-way throttle valve and a valve block;

[0036] Open the first separation selection valve and close the proportional reversing valve to allow the oil in the oil supply module to directly enter the pollutant concentration and particle level detection module; or open the second separation selection valve and close the proportional reversing valve to allow the oil in the oil supply module to directly enter the pollutant concentration and particle level detection module; or open the first separation selection valve and the second separation selection valve at the same time and close the proportional reversing valve to allow the oil in the oil supply module to directly enter the pollutant concentration and particle level detection module. At this time, the industrial computer sends an opening instruction to the electromagnetic switch valve to test the internal pressure of the system through Ethernet, and at the same time opens the normally closed gate valve. A part of the oil passes through the normally closed gate valve and the fine filter into the flow meter to measure the oil flow, and enters the oil tank through the second spring-loaded one-way valve; the other part of the oil flows through the open electromagnetic switch valve, and the pressure sensor measures the oil pressure at this time; the measured oil flow and oil pressure are sent to the industrial computer through the flow meter and pressure sensor via Ethernet; the industrial computer dynamically adjusts the speed of the first motor or the second motor or the first motor and the second motor by comparing the preset system oil pressure and system flow parameters with the pressure and flow parameters measured in the loop to ensure that the system can obtain sufficient pressure and flow amount; adjust the one-way throttle valve to make the system flow meet the maximum demand, and the excess oil is discharged into the oil tank through the safety valve; the oil flowing through the one-way throttle valve is tested for pollution level by the particle counter, and the inspection result is uploaded to the industrial computer via Ethernet. The industrial computer determines the quantity and level of impurities. When the oil meets the use requirements, the industrial computer sends an open command to the electromagnetic reversing valve via Ethernet. The oil is then distributed to the valve block to provide oil source for the operation of the valve block; when the oil does not meet the use requirements, the industrial computer sends a close command to the electromagnetic reversing valve via Ethernet. At this time, the oil will be distributed to the oil tank for re-addition and stirring of pollutants, and the previous test steps are repeated until the pollutants in the oil meet the requirements and are provided to the valve block.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] The present invention provides a temperature control module, an oil supply module, a centrifugal separation module, and a pollutant concentration and particle level detection module, and connects these modules to an industrial computer to adjust the entire system. It adopts the principles of heat exchange and centrifugal filtration to supply pollutants of different temperatures and different levels, simulates the working state of the hydraulic valve block in a real hydraulic automatic transmission assembly under contamination, and confirms the state of the hydraulic unit under different temperatures and different levels of pollutants by performing performance tests on the hydraulic valve block of the hydraulic unit. The fragile parts of the hydraulic valve block are redesigned in a targeted manner to improve the anti-pollution ability of the hydraulic valve block. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 This is a schematic diagram of the anti-pollution capability detection system for the hydraulic valve block of a hydraulic automatic transmission according to the present invention.

[0041] Among them: 1-filter, 2-electric pump, 3-heating / cooling selection valve, 4-heater, 5-condenser, 6-heat exchanger, 7-mixer, 8-liquid level sensor, 9-temperature sensor, 10-first motor, 11-first oil pump, 12-first separation selection valve, 13-first centrifuge, 14-first impurity indicator, 15-first spring-loaded check valve, 16-first check valve, 17-proportional reversing valve, 18-normally closed gate valve, 19-fine filter, 20-flow meter, 21-second spring-loaded check valve, 22-Pressure sensor, 23-Solenoid switch valve, 24-Safety valve, 25-Solenoid reversing valve, 26-Particle counter, 27-One-way throttle valve, 28-Valve block, 29-Oil tank, 30-Clean oil tank, 31-Clean oil pump, 32-Third one-way valve, 33-Second motor, 34-Second oil pump, 35-Second separation selection valve, 36-Second centrifuge, 37-Second impurity indicator, 38-Third spring-loaded one-way valve, 39-Second one-way valve, 40-Antifreeze storage tank, 41-Ethernet, 42-Industrial computer. DETAILED DESCRIPTION

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0044] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0045] In the description of the embodiments of the present invention, it should be noted that if the terms "upper," "lower," "horizontal," "inner," etc. appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the inventive product is typically placed when in use. These terms are merely for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," etc. are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0046] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0047] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0048] The present invention is described in further detail below with reference to the accompanying drawings:

[0049] See also Figure 1 The present invention discloses a system for detecting the anti-pollution ability of a hydraulic valve block of a hydraulic automatic transmission, comprising: a temperature control module, an oil supply module, a centrifugal separation module, a pollutant concentration and particle level detection module, an oil tank 29 and an industrial computer 42;

[0050] The input and output ends of the temperature control module are both connected to the oil tank 29; the input end of the oil supply module is connected to the oil tank 29; the output end of the oil supply module is connected to the input end of the centrifugal separation module, and the output end of the centrifugal separation module is connected to the pollutant concentration and particle level detection module; the temperature control module, oil supply module, centrifugal separation module, pollutant concentration and particle level detection module are all connected to the industrial computer 42.

[0051] The temperature control module includes an electric pump 2, a heating / cooling selection valve 3, a heater 4, a condenser 5, fins 6 and an antifreeze storage tank 40; the inlet of the electric pump 2 is connected to the antifreeze storage tank 40; the antifreeze storage tank 40 is connected to the fins 6; the outlet of the electric pump 2 is connected to the inlet of the heating / cooling selection valve 3; the outlet of the heating / cooling selection valve 3 is branched, one outlet is connected to the heater 4, and the other outlet is connected to the condenser 5, and the heater 4 and the condenser 5 are both connected to the fins 6; the electric pump 2 and the heating / cooling selection valve 3 are connected to the industrial computer 42 via Ethernet 41.

[0052] The oil supply module includes a first motor 10, a first oil pump 11, a second motor 33 and a second oil pump 34; the first motor 10 drives the first oil pump 11 to extract oil from the oil tank 29; the second motor 33 drives the second oil pump 34 to extract oil from the oil tank 29; the first motor 10 and the second motor 33 are connected to the industrial computer 42 via Ethernet 41.

[0053] The centrifugal separation module includes a first separation selection valve 12, a first centrifuge 13, a first impurity indicator 14, a second separation selection valve 35, a second centrifuge 36, a second impurity indicator 37 and a proportional reversing valve 17;

[0054] The inlet of the first separation selector valve 12 is connected to the first oil pump 11, and the outlet of the first separation selector valve 12 is branched, one outlet being connected to the inlet of the first centrifuge 13; the inlet of the second separation selector valve 35 is connected to the second oil pump 34, and the outlet of the second separation selector valve 35 is branched, one outlet being connected to the inlet of the second centrifuge 36; the other outlet of the first separation selector valve 12 is connected to the other outlet of the second separation selector valve 35, and both are connected to the proportional reversing valve 17;

[0055] The outlet of the first centrifuge 13 is connected to the inlet of the first impurity indicator 14, and the outlet of the second centrifuge 36 is connected to the inlet of the second impurity indicator 37. The outlets of the first impurity indicator 14 and the second impurity indicator 37 are both connected to the proportional reversing valve 17; the outlet of the proportional reversing valve 17 is branched, one outlet is connected to the clean oil tank 30, and the other outlet is connected to the oil tank 29;

[0056] The first separation selection valve 12 , the first centrifuge 13 , the first impurity indicator 14 , the second separation selection valve 35 , the second centrifuge 36 , the second impurity indicator 37 and the proportional reversing valve 17 are all connected to an industrial computer 42 via Ethernet 41 .

[0057] The pollutant concentration and particle level detection module includes a normally closed gate valve 18, a fine filter 19, a flow meter 20, a second spring-loaded one-way valve 21, a pressure sensor 22, an electromagnetic switch valve 23, a safety valve 24, an electromagnetic reversing valve 25, a particle counter 26, a one-way throttle valve 27, and a valve block 28;

[0058] The inlet of the normally closed gate valve 18 is connected to the branch line of the proportional reversing valve 17 connected to the oil tank 29, and the outlet of the normally closed gate valve 18 is connected to the inlet of the fine filter 19; the inlet of the flow meter 20 is connected to the outlet of the fine filter 19, and the inlet of the second spring-loaded check valve 21 is connected to the outlet of the flow meter 20; the outlet of the second spring-loaded check valve 21 is connected to the oil tank 29;

[0059] The electromagnetic reversing valve 25, the particle counter 26, and the one-way throttle valve 27 are all located on the branch line where the proportional reversing valve 17 is connected to the oil tank 29;

[0060] The inlet of the one-way throttle valve 27 is connected to the other outlet of the proportional reversing valve 17; the outlet of the one-way throttle valve 27 is connected to the inlet of the particle counter 26, and the outlet of the particle counter 26 is connected to the inlet of the electromagnetic reversing valve 25. The outlet of the electromagnetic reversing valve 25 is branched, with one outlet connected to the oil tank 29; the other outlet is connected to the inlet of the valve block 28, and the outlet of the valve block 28 is connected to the oil tank 29;

[0061] The inlet of the electromagnetic switch valve 23 is connected to the other outlet of the proportional reversing valve 17, and the outlet of the electromagnetic switch valve 23 is connected to the pressure sensor 22;

[0062] The safety valve 24 is installed on the branch line connecting the proportional reversing valve 17 to the oil tank 29; the outlet of the safety valve 24 is connected to the oil tank 29;

[0063] The flow meter 20 , the pressure sensor 22 , the electromagnetic switch valve 23 , the electromagnetic reversing valve 25 and the particle counter 26 are all connected to the industrial computer 42 via the Ethernet 41 .

[0064] The temperature control module also includes a filter 1, a mixer 7, a liquid level sensor 8 and a temperature sensor 9; the filter 1 is installed at the inlet of the electric pump 2 to ensure the cleanliness of the antifreeze inside the antifreeze storage tank 40; the mixer 7 is installed in the oil tank 29 to stir the oil in the oil tank 29 so that the oil is heated evenly; the liquid level sensor 8 is located in the oil tank 29 to detect the height of the oil in the oil tank 29; the temperature sensor 9 is installed in the oil tank 29 to monitor the temperature of the oil in the oil tank 29; the liquid level sensor 8 and the temperature sensor 9 are both connected to the industrial computer 42 via Ethernet 41.

[0065] The centrifugal separation module further includes a first spring-loaded one-way valve 15, a third spring-loaded one-way valve 38, a first one-way valve 16, and a second one-way valve 39; the inlet of the first spring-loaded one-way valve 15 is connected to the outlet of the first oil pump 11, and the outlet of the first spring-loaded one-way valve 15 is connected to the inlet of the first separation selection valve 12; the inlet of the third spring-loaded one-way valve 38 is connected to the outlet of the second oil pump 34, and the outlet of the third spring-loaded one-way valve 38 is connected to the inlet of the second separation selection valve 35;

[0066] The first one-way valve 16 is installed between the first impurity indicator 14 and the proportional reversing valve 17 , and the second one-way valve 39 is installed between the second impurity indicator 37 and the proportional reversing valve 17 .

[0067] The centrifugal separation module also includes a clean oil pump 31 and a third one-way valve 32; the outlet of the third one-way valve 32 is connected to the oil tank 29; the inlet of the third one-way valve 32 is connected to the outlet of the clean oil pump 31, and the inlet of the clean oil pump 31 is connected to the clean oil tank 30; the clean oil pump 31 is connected to the industrial computer 42 via Ethernet 41.

[0068] A method for detecting the anti-pollution capability of a hydraulic valve block of a hydraulic automatic transmission includes: an industrial computer 42 receives a signal sent by a temperature control module to control the temperature of the oil in the oil tank 29; the industrial computer 42 receives a signal sent by a pollutant concentration and particle level detection module to control the amount of oil provided by the oil supply module to the centrifugal separation module; the industrial computer 42 controls the centrifugal separation module to separate the oil from the oil supply module; and the industrial computer 42 controls the pollutant concentration and particle level detection module to detect the impurity level of the oil.

[0069] The invention also includes: an Ethernet 41; an industrial computer 42 connected to a temperature control module, a pollutant concentration and particle level detection module, a centrifugal separation module and an oil supply module via the Ethernet 41;

[0070] The temperature control module includes an electric pump 2, a heating / cooling selection valve 3, a heater 4, a condenser 5, fins 6, an antifreeze storage tank 40, a filter 1, a mixer 7, a liquid level sensor 8 and a temperature sensor 9;

[0071] The temperature is set on the industrial computer 42. The temperature sensor 9 monitors the temperature of the oil in the oil tank 29 and sends it to the industrial computer 42. The industrial computer 42 receives the temperature signal sent by the temperature sensor 9 via the Ethernet 41, compares the temperature signal with the set temperature, selects to open the heating / cooling selection valve 3, and drives the electric pump 2 to circulate the antifreeze stored in the antifreeze storage tank 40, directing the antifreeze to the heater 4 or condenser 5. The heated or cooled antifreeze transfers heat to the oil in the tank through the fins 6 placed inside the oil tank 29. The mixer 7 stirs the oil in the oil tank 29 to ensure uniform heating of the oil. The cleanliness of the antifreeze in the antifreeze storage tank 40 is ensured by the filter 1.

[0072] The oil supply module includes a first motor 10, a first oil pump 11, a second motor 33 and a second oil pump 34;

[0073] When the temperature in the oil tank 29 is the same as the temperature set on the industrial computer 42, the industrial computer 42 sends a shutdown command to the electric pump 2 through the Ethernet 41, and sends a start command to the first motor 10 or the second motor 33 or the first motor 10 and the second motor 33 at the same time, so that the first motor 10 drives the first oil pump 11 to pump the oil in the oil tank 29; or the second motor 33 drives the second oil pump 34 to pump the oil in the oil tank 29; or the first motor 10 drives the first oil pump 11 and the second motor 33 drives the second oil pump 34 to pump the oil in the oil tank 29 together;

[0074] The centrifugal separation module includes a first separation selection valve 12, a first centrifuge 13, a first impurity indicator 14, a second separation selection valve 35, a second centrifuge 36, a second impurity indicator 37, a proportional reversing valve 17, a first spring-loaded check valve 15, a clean oil tank 30, a clean oil pump 31, a third check valve 32, a third spring-loaded check valve 38, a first check valve 16, and a second check valve 39;

[0075] The oil pumped by the first oil pump 11 enters the first separation selector valve 12 through the first spring-loaded one-way valve 15. After the first separation selector valve 12 is closed, the oil enters the first centrifuge 13 for separation of oil and impurities. The first impurity indicator 14 displays the amount of impurities in the separated oil.

[0076] The oil pumped by the second oil pump 34 enters the second separation selector valve 35 through the third spring-loaded one-way valve 38. After the second separation selector valve 35 is closed, the oil enters the second centrifuge 36 for separation of oil and impurities. The second impurity indicator 37 displays the amount of impurities in the separated oil.

[0077] The impurity values displayed by the first impurity indicator 14 and the second impurity indicator 37 are uploaded to the industrial computer 42 via Ethernet 41. The industrial computer 42 determines the level of impurities. If the oil is qualified, the industrial computer 42 sends an open command to the proportional reversing valve 17 via Ethernet 41, and the oil passes through the first one-way valve 16 or the second one-way valve 39 or the first one-way valve 16 and the second one-way valve 39 into the proportional reversing valve 17 and is then distributed to the clean oil tank 30. If the oil is unqualified, the industrial computer 42 sends a close command to the proportional reversing valve 17 and the electromagnetic reversing valve 25 via Ethernet 41, and the unqualified oil passes through the proportional reversing valve 17 and the electromagnetic reversing valve 25. The oil passes through the first one-way valve 16 or the second one-way valve 39 or the first one-way valve 16 and the second one-way valve 39, enters the proportional reversing valve 17 and the electromagnetic reversing valve 25, and returns to the oil tank 29 for recirculation. During the process of separating impurities from all the oil in the oil tank 29, the industrial computer 42 retrieves the value of the liquid level sensor 8 in real time through the Ethernet 41. When a certain value is met, the industrial computer 42 sends a command through the Ethernet 41 to start the clean oil pump 31, and the clean oil in the clean oil tank 30 is introduced into the oil tank 29 through the third one-way valve 32. During the introduction process, the third one-way valve 32 prevents the oil from flowing back and contaminating the clean oil tank 30.

[0078] The pollutant concentration and particle level detection module includes a normally closed gate valve 18, a fine filter 19, a flow meter 20, a second spring-loaded one-way valve 21, a pressure sensor 22, an electromagnetic switch valve 23, a safety valve 24, an electromagnetic reversing valve 25, a particle counter 26, a one-way throttle valve 27, and a valve block 28;

[0079] Open the first separation selection valve 12 and close the proportional reversing valve 17 to allow the oil provided by the oil supply module to directly enter the pollutant concentration and particle level detection module; or open the second separation selection valve 35 and close the proportional reversing valve 17 to allow the oil provided by the oil supply module to directly enter the pollutant concentration and particle level detection module; or open the first separation selection valve 12 and the second separation selection valve 35 at the same time and close the proportional reversing valve 17 to allow the oil provided by the oil supply module to directly enter the pollutant concentration and particle level detection module. At this time, the industrial computer 42 sends an opening instruction to the electromagnetic switch valve 23 through the Ethernet 41 to test the internal pressure of the system, and at the same time opens the normally closed gate valve 18. Part of the oil enters the flow meter 20 through the normally closed gate valve 18 and the fine filter 19 to measure the oil flow, and enters the oil tank 29 through the second spring-loaded one-way valve 21; the other part of the oil flows through the opened electromagnetic switch valve 23, and the pressure sensor 22 measures the oil pressure at this time; the measured oil flow and oil pressure are sent to the industrial computer 42 through the Ethernet 41 through the flow meter 20 and the pressure sensor 22; the industrial computer 42 dynamically adjusts the speed of the first motor 10 or the second motor 33 or the first motor 10 and the second motor 33 by comparing the preset system oil pressure and system flow parameters with the pressure and flow parameters measured in the loop to ensure that the system can obtain sufficient pressure and flow; adjust the one-way throttle valve 27 so that the system flow meets the maximum demand, and the excess oil is discharged into the oil tank 29 through the safety valve 24; the oil flowing through the one-way throttle valve 27 is tested for pollution level by the particle counter 26, and the inspection result is uploaded to the industrial computer 42 through the Ethernet 41. The industrial computer 42 determines the level of impurities. When the oil meets the use requirements, the industrial computer 42 sends an open command to the electromagnetic reversing valve 25 through the Ethernet 41. The oil is then distributed to the valve block 28 to provide an oil source for the operation of the valve block 28; when the oil does not meet the use requirements, the industrial computer 42 sends a close command to the electromagnetic reversing valve 25 through the Ethernet 41. At this time, the oil will be distributed to the oil tank 29 for re-addition and stirring of pollutants, and the previous test steps are repeated until the pollutants in the oil meet the requirements and are provided to the valve block 28.

[0080] Working principle of this system:

[0081] Test method for the hydraulic valve block's ability to resist pollution of the same level and concentration: Set the temperature on the industrial computer 42, and the industrial computer 42 receives the temperature signal sent by the temperature sensor 9 through the Ethernet 41, and compares the temperature signal with the set temperature. When the set temperature is lower than the temperature detected by the temperature sensor 9, the industrial computer 42 sends an open command to the electric pump 2 and the heating / cooling selection valve 3 through the Ethernet 41. At this time, the electric pump 2 is powered on and starts to draw antifreeze from the antifreeze storage tank 40 into the condenser 5 for cooling. The cooled antifreeze transfers the temperature to the oil in the oil tank 29 through the fins 6. When the set temperature is higher than the temperature detected by the temperature sensor 9, the industrial computer 42 sends an open command to the electric pump 2 and the heater 4 through the Ethernet 41, and sends a close command to the heating / cooling selection valve 3. At this time, the electric pump 2 is powered on and starts to draw antifreeze from the antifreeze storage tank 33 It enters the heater 4 for heating, and the heated antifreeze transfers the temperature to the oil in the oil tank 29 through the fins 6. When the set temperature is equal to the temperature detected by the temperature sensor 9, the oil temperature meets the requirement. The industrial computer 42 sends a shutdown command to the electric pump 2 through the Ethernet 41, and sends an open command to the first motor 10, so that the first motor 10 drives the first oil pump 11 to extract the oil in the oil tank 29; or sends an open command to the second motor 33, so that the second motor 33 drives the second oil pump 34 to extract the oil in the oil tank 29; or sends an open command to the first motor 10 and the second motor 33 at the same time, so that the first motor 10 drives the first oil pump 11 and the second motor 33 drives the second oil pump 34 to extract the oil in the oil tank 29 together; during this process, the mixer 7 is always turned on and continuously stirs the oil in the oil tank 29 to make the oil contaminants and temperature evenly distributed. Industrial computer 42 issues a closing command to first separation selector valve 12 or second separation selector valve 35 or both, and proportional reversing valve 17 via Ethernet 41, and an opening command to solenoid switch valve 23 to obtain the values measured by flowmeter 20 and pressure sensor 22. By comparing preset system oil pressure and system flow parameters with parameters such as pressure and flow measured in the circuit, the speed of first motor 10 or second motor 33 or both is dynamically adjusted to ensure sufficient system pressure and flow. One-way throttle valve 27 is adjusted to ensure maximum system flow, and excess oil is discharged into tank 29 through safety valve 24.The oil flowing through the one-way throttle valve 27 is tested for pollution level by the particle counter 26, and the inspection result is uploaded to the industrial computer 42 via Ethernet 41. The industrial computer 42 determines the level of impurities. When the oil meets the use requirements, the industrial computer 42 sends an open command to the electromagnetic reversing valve 25 via Ethernet 41. The oil is then distributed to the valve block 28 to provide an oil source for the operation of the valve block 28; when the oil does not meet the use requirements, the industrial computer 42 sends a close command to the electromagnetic reversing valve 25 via Ethernet 41. At this time, the oil will be distributed to the oil tank 29 for re-addition and stirring of pollutants, and the previous test steps are repeated until the pollutants in the oil meet the requirements and are provided to the test valve block 28.

[0082] Test method for the hydraulic valve block's ability to resist different levels of pollution: Set the temperature on the industrial computer 42, and the industrial computer 42 receives the temperature signal sent by the temperature sensor 9 through the Ethernet 41, and compares the temperature signal with the set temperature. When the set temperature is lower than the temperature detected by the temperature sensor 9, the industrial computer 42 sends an open command to the electric pump 2 and the heating / cooling selection valve 3 through the Ethernet 41. At this time, the electric pump 2 is powered on and starts to draw antifreeze from the antifreeze storage tank 40 into the condenser 5 for cooling. The cooled antifreeze transfers the temperature to the oil in the oil tank 29 through the fins 6. When the set temperature is higher than the temperature detected by the temperature sensor 9, the industrial computer 42 sends an open command to the electric pump 2 and the heater 4 through the Ethernet 41, and sends a close command to the heating / cooling selection valve 3. At this time, the electric pump 2 is powered on and starts to draw antifreeze from the antifreeze storage tank 33 into The antifreeze enters the heater 4 for heating, and the heated antifreeze transfers the temperature to the oil in the oil tank 29 through the fins 6. When the set temperature is equal to the temperature detected by the temperature sensor 9, the oil temperature meets the requirement. The industrial computer 42 sends a shutdown command to the electric pump 2 through the Ethernet 41, and sends an open command to the first motor 10, so that the first motor 10 drives the first oil pump 11 to extract the oil in the oil tank 29; or sends an open command to the second motor 33, so that the second motor 33 drives the second oil pump 34 to extract the oil in the oil tank 29; or sends an open command to the first motor 10 and the second motor 33 at the same time, so that the first motor 10 drives the first oil pump 11 and the second motor 33 drives the second oil pump 34 to extract the oil in the oil tank 29 together; during this process, the mixer 7 is always turned on and continuously stirs the oil in the oil tank 29 to make the oil contaminants and temperature evenly distributed. The industrial computer 42 issues a closing command to the proportional reversing valve 17 via Ethernet 41 and an opening command to the first separation selector valve 12 and the solenoid switch valve 23; or to the second separation selector valve 35 and the solenoid switch valve 23; or to all of the first separation selector valve 12, the second separation selector valve 35, and the solenoid switch valve 23 simultaneously. The computer 42 obtains the values measured by the flow meter 20 and the pressure sensor 22, and dynamically adjusts the speed of the first motor 10 or the second motor 33, or both, by comparing the preset system oil pressure and system flow parameters with the pressure and flow parameters measured in the circuit to ensure sufficient system pressure and flow. The one-way throttle valve 27 is adjusted to ensure that the system flow meets the maximum demand, and excess oil is discharged into the oil tank 29 through the safety valve 24. The oil flowing through the one-way throttle valve 27 is tested for contamination level by a particle counter 26. The test result is uploaded to an industrial computer 42 via Ethernet 41. The industrial computer 42 determines the level of impurities. When the oil meets the usage requirements, the industrial computer 42 sends an open command to the electromagnetic reversing valve 25 via Ethernet 41. The oil is then distributed to the valve block 28, providing an oil source for the operation of the valve block 28.When the oil does not meet the use requirements, the industrial computer 42 sends a closing command to the electromagnetic reversing valve 25 through the Ethernet 41. At this time, the oil will be distributed to the oil tank 29 for re-addition and stirring of pollutants, and the previous test steps will be repeated until the pollutants in the oil meet the requirements and then it will be provided to the test valve block 28; after completing the anti-pollution ability test at this level and concentration, the industrial computer 42 sends a closing command to the first separation selection valve 12 or the second separation selection valve 35 or the first separation selection valve 12 and the second separation selection valve 35 through the Ethernet 41, and the first motor 10 will drive the first oil pump 11 to provide oil of this pollution level to the first centrifuge 13, and the first centrifuge 1 3 will automatically separate the solid particles according to the particle size, and the separated oil will be detected by the first impurity indicator 14, or the second motor 33 will drive the second oil pump 34 to provide the oil of the pollution level to the second centrifuge 36, and the second centrifuge 36 will automatically separate the solid particles according to the particle size, and the separated oil will be detected by the second impurity indicator 37; or the first motor 10 and the second motor 33 are started at the same time, and the oil is respectively transferred to the first centrifuge 13 and the second centrifuge 36 through the first oil pump 11 and the second oil pump 34, wherein the oil separated by the first centrifuge 13 is detected by the first impurity indicator 14, and the oil separated by the second centrifuge 36 is detected by the first impurity indicator 14. The oil is detected by the second impurity indicator 37, and the detection result is uploaded to the working condition computer 42 through the Ethernet 41. The industrial control computer 42 judges whether the oil meets the requirements of clean oil by comparing the detection result and the concentration level. If the result is clean oil, the industrial control computer 42 sends an opening instruction to the proportional reversing valve 17 through the Ethernet 41, so that the oil enters the clean oil tank 30. If the result is not clean oil, the industrial control computer 42 sends a closing instruction to the proportional reversing valve 17 and the electromagnetic reversing valve 25 through the Ethernet 41, and the oil returns to the oil tank 29 and is re-pumped into the first centrifuge 13 by the first oil pump 11 for contaminant separation; or re-pumped into the second centrifuge 36 by the second oil pump 34 for contaminant separation. Separation; or the first oil pump 11 and the second oil pump 34 simultaneously re-pump oil into the first centrifuge 13 and the second centrifuge 36 for contaminant separation; after the oil separation is complete, the industrial computer 42 retrieves the value of the liquid level sensor 8 in real time via Ethernet 41. When a certain value is met, the industrial computer 42 issues a start command to the clean oil pump 31, directing the clean oil in the clean oil tank 30 into the oil tank 29 through the third one-way valve 32. At the same time, a prompt is issued to inform the operator to add new contaminants to mix the new level of contaminants. The above steps are repeated until the system extracts contaminants at a new level and supplies them to the valve block 28, thereby completing the test of the valve block's ability to resist different levels and concentrations of contamination.

[0083] Test method for the hydraulic valve block's ability to resist pollution of the same level and different concentrations: Set the temperature on the industrial computer 42, and the industrial computer 42 receives the temperature signal sent by the temperature sensor 9 through the Ethernet 41, and compares the temperature signal with the set temperature. When the set temperature is lower than the temperature detected by the temperature sensor 9, the industrial computer 42 sends an open command to the electric pump 2 and the heating / cooling selection valve 3 through the Ethernet 41. At this time, the electric pump 2 is powered on and starts to draw antifreeze from the antifreeze storage tank 40 into the condenser 5 for cooling. The cooled antifreeze transfers the temperature to the oil in the oil tank 29 through the fins 6. When the set temperature is higher than the temperature detected by the temperature sensor 9, the industrial computer 42 sends an open command to the electric pump 2 and the heater 4 through the Ethernet 41, and sends a close command to the heating / cooling selection valve 3. At this time, the electric pump 2 is powered on and starts to draw antifreeze from the antifreeze storage tank 33 The liquid enters the heater 4 for heating, and the heated antifreeze liquid transfers the temperature to the oil in the oil tank 29 through the fins 6. When the set temperature is equal to the temperature detected by the temperature sensor 9, the oil temperature meets the requirement. The industrial computer 42 sends a shutdown command to the electric pump 2 through the Ethernet 41, and sends an open command to the first motor 10, so that the first motor 10 drives the first oil pump 11 to extract the oil in the oil tank 29; or sends an open command to the second motor 33, so that the second motor 33 drives the second oil pump 34 to extract the oil in the oil tank 29; or sends an open command to the first motor 10 and the second motor 33 at the same time, so that the first motor 10 drives the first oil pump 11 and the second motor 33 drives the second oil pump 34 to extract the oil in the oil tank 29 together; during this process, the mixer 7 is always turned on and continuously stirs the oil in the oil tank 29 to make the oil contaminants and temperature evenly distributed. Industrial computer 42 issues a closing command to proportional reversing valve 17 via Ethernet 41 and an opening command to first separation selector valve 12, second separation selector valve 35, or both, and solenoid switch valve 23. This command obtains the values measured by flowmeter 20 and pressure sensor 22. By comparing preset system oil pressure and flow parameters with parameters such as pressure and flow measured in the circuit, the speed of first motor 10, second motor 33, or both, is dynamically adjusted to ensure sufficient system pressure and flow. One-way throttle valve 27 is adjusted to maximize system flow, and excess oil is discharged into tank 29 through safety valve 24.The oil flowing through the one-way throttle valve 27 is tested for pollution level by the particle counter 26. The test result is uploaded to the industrial computer 42 via Ethernet 41. The industrial computer 42 determines the impurity quantity level to determine whether the impurity level meets the maximum pollution concentration requirement. When the requirement is met, the industrial computer 42 sends an open command to the electromagnetic reversing valve 25 via Ethernet 41. The oil is then distributed to the valve block 28 to provide an oil source for the operation of the valve block 28. When the requirement is not met, the industrial computer 42 sends a close command to the electromagnetic reversing valve 25 via Ethernet 41. At this time, the oil will be distributed to the oil tank 29 for re- The pollutants are added and stirred, and the previous test steps are repeated until the pollutants in the oil meet the requirements and are provided to the test valve block 28. When it is necessary to change the smaller pollutant concentration at the same level, the industrial computer 42 sends a closing instruction to the first separation selection valve 12 and the proportional reversing valve 17 through the Ethernet 41 and sends an opening instruction to the electromagnetic switch valve 23, and sends a speed instruction to the first centrifuge 13. After the oil 29 in the oil tank is partially separated by the first centrifuge 13, the oil passes through the first impurity indicator 14 for particle counting, or is sent to the second separation selection valve 35. The first centrifuge 36 is driven by the first centrifuge 36, and the second centrifuge 36 is driven by the second centrifuge 36. The oil 29 in the oil tank is partially separated by the second centrifuge 36, and the oil is counted by the second impurity indicator 37. Alternatively, a closing command is issued to the first separation selection valve 12, the second separation selection valve 35 and the proportional reversing valve 17, and an opening command is issued to the electromagnetic switch valve 23. At the same time, a speed command is issued to the first centrifuge 13 and ... After the centrifuge 36 performs partial particle separation, the oil passes through the first impurity indicator 14 and the second impurity indicator 37 for particle counting. The result is sent to the industrial computer 42 via Ethernet 41. The industrial computer 42 adjusts the speed of the first centrifuge 13 or the second centrifuge 36 or the first centrifuge 13 and the second centrifuge 36 by comparing the particle counts at a certain time until the concentration of oil contaminant particles meets the requirements. At this time, the industrial computer 42 sends an opening command to the electromagnetic reversing valve 25 via Ethernet 41, and the oil is supplied to the valve block 28, completing the test of the valve block's ability to resist different concentrations of contamination.

[0084] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A method for detecting the anti-pollution ability of a hydraulic valve block of a hydraulic automatic transmission, characterized in that: A system for detecting the anti-pollution capability of a hydraulic valve block of a hydraulic automatic transmission is provided, the system comprising: a temperature control module, an oil supply module, a centrifugal separation module, a pollutant concentration and particle level detection module, an oil tank (29) and an industrial control computer (42); The input and output ends of the temperature control module are both connected to the oil tank (29); the input end of the oil supply module is connected to the oil tank (29); the output end of the oil supply module is connected to the input end of the centrifugal separation module, and the output end of the centrifugal separation module is connected to the pollutant concentration and particle level detection module; the temperature control module, the oil supply module, the centrifugal separation module, and the pollutant concentration and particle level detection module are all connected to an industrial control computer (42); the method comprises: the industrial control computer (42) receives a signal sent by the temperature control module to control the temperature of the oil in the oil tank (29); the industrial control computer (42) receives a signal sent by the pollutant concentration and particle level detection module to control the amount of oil provided by the oil supply module to the centrifugal separation module; the industrial control computer (42) controls the centrifugal separation module to separate the oil from the oil supply module; the industrial control computer (42) controls the pollutant concentration and particle level detection module to detect the impurity level of the oil; Ethernet (41); the industrial computer (42) is connected to the temperature control module, the pollutant concentration and particle level detection module, the centrifugal separation module and the oil supply module via the Ethernet (41); The temperature control module includes an electric pump (2), a heating / cooling selection valve (3), a heater (4), a condenser (5), fins (6), an antifreeze storage tank (40), a filter (1), a mixer (7), a liquid level sensor (8) and a temperature sensor (9); The temperature is set on the industrial computer (42), the temperature sensor (9) monitors the temperature of the oil in the oil tank (29) and sends it to the industrial computer (42), the industrial computer (42) receives the temperature signal sent by the temperature sensor (9) through the Ethernet (41), compares the temperature signal with the set temperature, selects to open the heating / cooling selection valve (3), and drives the electric pump (2) to drive the antifreeze stored in the antifreeze storage tank (40) to circulate, and the antifreeze is passed to the heater (4) or the condenser (5), and the heated or cooled antifreeze is heat-transferred with the oil in the oil tank through the fins (6) placed inside the oil tank (29), and the stirrer (7) stirs the oil in the oil tank (29) to make the oil heated evenly; the cleanliness of the antifreeze in the antifreeze storage tank (40) is ensured by the filter (1); The oil supply module includes a first motor (10), a first oil pump (11), a second motor (33) and a second oil pump (34); When the temperature in the oil tank (29) is the same as the temperature set in the industrial computer (42), the industrial computer (42) sends a shutdown instruction to the electric pump (2) through the Ethernet (41), and sends an opening instruction to the first motor (10) or the second motor (33) or the first motor (10) and the second motor (33) at the same time, so that the first motor (10) drives the first oil pump (11) to extract the oil in the oil tank (29); or the second motor (33) drives the second oil pump (34) to extract the oil in the oil tank (29); or the first motor (10) drives the first oil pump (11) and the second motor (33) drives the second oil pump (34) to extract the oil in the oil tank (29) together; The centrifugal separation module comprises a first separation selection valve (12), a first centrifuge (13), a first impurity indicator (14), a second separation selection valve (35), a second centrifuge (36), a second impurity indicator (37), a proportional reversing valve (17), a first spring-loaded check valve (15), a clean oil tank (30), a clean oil pump (31), a third check valve (32), a third spring-loaded check valve (38), a first check valve (16), and a second check valve (39); The oil extracted by the first oil pump (11) enters the first separation selection valve (12) through the first spring-loaded one-way valve (15). The first separation selection valve (12) is closed, and the oil enters the first centrifuge (13) for separation of oil and impurities. The first impurity indicator (14) displays the amount of impurities in the separated oil. The oil extracted by the second oil pump (34) enters the second separation selection valve (35) through the third spring-loaded one-way valve (38). The second separation selection valve (35) is closed, and the oil enters the second centrifuge (36) for separation of oil and impurities. The second impurity indicator (37) displays the value of impurities in the separated oil. The impurity values displayed by the first impurity indicator (14) and the second impurity indicator (37) are uploaded to the industrial control computer (42) via Ethernet (41). The industrial control computer (42) determines the impurity quantity level. If the oil is qualified, the industrial control computer (42) sends an opening instruction to the proportional reversing valve (17) via Ethernet (41), and the oil enters the proportional reversing valve (17) through the first one-way valve (16) or the second one-way valve (39) or the first one-way valve (16) and the second one-way valve (39) and is then distributed to the clean oil tank (30). If the oil is unqualified, the industrial control computer (42) sends a closing instruction to the proportional reversing valve (17) and the electromagnetic reversing valve (25) via Ethernet (41), and the unqualified oil passes through the proportional reversing valve (17). The first one-way valve (16) or the second one-way valve (39) or the first one-way valve (16) and the second one-way valve (39) enter the proportional reversing valve (17) and the electromagnetic reversing valve (25) and return to the oil tank (29) for recirculation. During the impurity separation process of all the oil in the oil tank (29), the industrial control computer (42) retrieves the value of the liquid level sensor (8) in real time through the Ethernet (41). When a certain value is met, the industrial control computer (42) sends a command through the Ethernet (41) to start the clean oil pump (31) and guide the pure oil in the clean oil tank (30) into the oil tank (29) through the third one-way valve (32). During the introduction process, the third one-way valve (32) prevents the oil from flowing back and contaminating the clean oil tank (30).

2. The method for detecting the anti-pollution ability of a hydraulic valve block of a hydraulic automatic transmission according to claim 1, characterized in that: The pollutant concentration and particle level detection module includes a normally closed gate valve (18), a fine filter (19), a flow meter (20), a second spring pressed-in check valve (21), a pressure sensor (22), an electromagnetic switch valve (23), a safety valve (24), an electromagnetic reversing valve (25), a particle counter (26), a one-way throttle valve (27) and a valve block (28); The first separation selection valve (12) is opened, and the proportional reversing valve (17) is closed, so that the oil in the oil supply module directly enters the pollutant concentration and particle level detection module; or the second separation selection valve (35) is opened, and the proportional reversing valve (17) is closed, so that the oil in the oil supply module directly enters the pollutant concentration and particle level detection module; or the first separation selection valve (12) and the second separation selection valve (35) are opened at the same time, and the proportional reversing valve (17) is closed, so that the oil in the oil supply module directly enters the pollutant concentration and particle level detection module; at this time, the industrial control computer (42) sends a command to open the control module through the Ethernet (41). The command is given to the electromagnetic switch valve (23) to test the internal pressure of the system, and the normally closed gate valve (18) is opened at the same time. A part of the oil enters the flow meter (20) through the normally closed gate valve (18) and the fine filter (19) to measure the oil flow, and enters the oil tank (29) through the second spring pressed one-way valve (21); the other part of the oil flows through the opened electromagnetic switch valve (23), and the pressure sensor (22) measures the oil pressure at this time; the measured oil flow and oil pressure are sent to the industrial control computer (42) through the flow meter (20) and the pressure sensor (22) via the Ethernet (41); the industrial control computer (42) The preset system oil pressure and system flow parameters are compared with the pressure and flow parameters measured in the circuit to dynamically adjust the rotation speed of the first motor (10) or the second motor (33) or the first motor (10) and the second motor (33) to ensure that the system can obtain sufficient pressure and flow; the one-way throttle valve (27) is adjusted to make the system flow meet the maximum demand, and the excess oil is discharged into the oil tank (29) through the safety valve (24); the oil flowing through the one-way throttle valve (27) is tested for pollution level by the particle counter (26), and the inspection result is uploaded to the industrial computer (42) through the Ethernet (41). The control computer (42) judges the level of impurities. When the oil meets the use requirements, the industrial control computer (42) sends an opening instruction to the electromagnetic reversing valve (25) through the Ethernet (41). The oil is then distributed to the valve block (28) to provide an oil source for the operation of the valve block (28); when the oil does not meet the use requirements, the industrial control computer (42) sends a closing instruction to the electromagnetic reversing valve (25) through the Ethernet (41). At this time, the oil will be distributed to the oil tank (29) for re-adding and stirring of pollutants, and the previous test steps are repeated until the pollutants in the oil meet the requirements and are provided to the valve block (28).

3. The method for detecting the anti-pollution capability of a hydraulic valve block of a hydraulic automatic transmission according to claim 1, characterized in that: The temperature control module comprises an electric pump (2), a heating / cooling selection valve (3), a heater (4), a condenser (5), a fin (6) and an antifreeze storage tank (40); the inlet of the electric pump (2) is connected to the antifreeze storage tank (40); the antifreeze storage tank (40) is connected to the fin (6); the outlet of the electric pump (2) is connected to the inlet of the heating / cooling selection valve (3); the outlet of the heating / cooling selection valve (3) is branched, one outlet is connected to the heater (4), and the other outlet is connected to the condenser (5), and the heater (4) and the condenser (5) are both connected to the fin (6); the electric pump (2) and the heating / cooling selection valve (3) are connected to an industrial computer (42) via Ethernet (41).

4. The method for detecting the anti-pollution capability of a hydraulic valve block of a hydraulic automatic transmission according to claim 1, characterized in that: The oil supply module comprises a first motor (10), a first oil pump (11), a second motor (33) and a second oil pump (34); the first motor (10) drives the first oil pump (11) to extract oil from an oil tank (29); the second motor (33) drives the second oil pump (34) to extract oil from an oil tank (29); the first motor (10) and the second motor (33) are connected to an industrial computer (42) via Ethernet (41).

5. The method for detecting the anti-pollution capability of a hydraulic valve block of a hydraulic automatic transmission according to claim 1, characterized in that: The centrifugal separation module comprises a first separation selection valve (12), a first centrifuge (13), a first impurity indicator (14), a second separation selection valve (35), a second centrifuge (36), a second impurity indicator (37) and a proportional reversing valve (17); The inlet of the first separation selection valve (12) is connected to the first oil pump (11), and the outlet of the first separation selection valve (12) is branched, one outlet of which is connected to the inlet of the first centrifuge (13); the inlet of the second separation selection valve (35) is connected to the second oil pump (34), and the outlet of the second separation selection valve (35) is branched, one outlet of which is connected to the inlet of the second centrifuge (36); the other outlet of the first separation selection valve (12) is connected to the other outlet of the second separation selection valve (35), and both are connected to a proportional reversing valve (17); The outlet of the first centrifuge (13) is connected to the inlet of the first impurity indicator (14), the outlet of the second centrifuge (36) is connected to the inlet of the second impurity indicator (37), and the outlet of the first impurity indicator (14) and the outlet of the second impurity indicator (37) are both connected to the proportional reversing valve (17); the outlet of the proportional reversing valve (17) is branched, one outlet is connected to the clean oil tank (30), and the other outlet is connected to the oil tank (29); The first separation selection valve (12), the first centrifuge (13), the first impurity indicator (14), the second separation selection valve (35), the second centrifuge (36), the second impurity indicator (37) and the proportional reversing valve (17) are all connected to an industrial computer (42) via Ethernet (41).

6. The method for detecting the anti-pollution capability of a hydraulic valve block of a hydraulic automatic transmission according to claim 1, characterized in that: The pollutant concentration and particle level detection module comprises a normally closed gate valve (18), a fine filter (19), a flow meter (20), a second spring-loaded one-way valve (21), a pressure sensor (22), an electromagnetic switch valve (23), a safety valve (24), an electromagnetic reversing valve (25), a particle counter (26), a one-way throttle valve (27) and a valve block (28); The inlet of the normally closed gate valve (18) is connected to the branch line of the proportional reversing valve (17) connected to the oil tank (29); the outlet of the normally closed gate valve (18) is connected to the inlet of the fine filter (19); the inlet of the flow meter (20) is connected to the outlet of the fine filter (19); the inlet of the second spring-loaded one-way valve (21) is connected to the outlet of the flow meter (20); and the outlet of the second spring-loaded one-way valve (21) is connected to the oil tank (29); The electromagnetic reversing valve (25), the particle counter (26), and the one-way throttle valve (27) are all located on the branch line where the proportional reversing valve (17) is connected to the oil tank (29); The inlet of the one-way throttle valve (27) is connected to the other outlet of the proportional reversing valve (17); the outlet of the one-way throttle valve (27) is connected to the inlet of the particle counter (26); the outlet of the particle counter (26) is connected to the inlet of the electromagnetic reversing valve (25); the outlet of the electromagnetic reversing valve (25) is branched, one outlet is connected to the oil tank (29); the other outlet is connected to the inlet of the valve block (28), and the outlet of the valve block (28) is connected to the oil tank (29); The inlet of the electromagnetic switch valve (23) is connected to the other outlet of the proportional reversing valve (17), and the outlet of the electromagnetic switch valve (23) is connected to the pressure sensor (22); The safety valve (24) is installed on a branch line connecting the proportional reversing valve (17) and the oil tank (29); the outlet of the safety valve (24) is connected to the oil tank (29); The flow meter (20), pressure sensor (22), electromagnetic switch valve (23), electromagnetic reversing valve (25) and particle counter (26) are all connected to the industrial computer (42) via Ethernet (41).

7. The method for detecting the anti-pollution capability of a hydraulic valve block of a hydraulic automatic transmission according to claim 3, characterized in that: The temperature control module further comprises a filter (1), a stirrer (7), a liquid level sensor (8) and a temperature sensor (9); the filter (1) is installed at the inlet of the electric pump (2) and is used to ensure the cleanliness of the antifreeze liquid inside the antifreeze storage tank (40); the stirrer (7) is installed in the oil tank (29) and is used to stir the oil in the oil tank (29) so that the oil is heated evenly; the liquid level sensor (8) is located in the oil tank (29) and is used to detect the height of the oil in the oil tank (29); the temperature sensor (9) is installed in the oil tank (29) and is used to monitor the temperature of the oil in the oil tank (29); the liquid level sensor (8) and the temperature sensor (9) are both connected to the industrial computer (42) via Ethernet (41).

8. The method for detecting the anti-pollution capability of a hydraulic valve block of a hydraulic automatic transmission according to claim 4, characterized in that: The centrifugal separation module further comprises a first spring-pressed one-way valve (15), a third spring-pressed one-way valve (38), a first one-way valve (16) and a second one-way valve (39); the inlet of the first spring-pressed one-way valve (15) is connected to the outlet of the first oil pump (11), and the outlet of the first spring-pressed one-way valve (15) is connected to the inlet of the first separation selection valve (12); the inlet of the third spring-pressed one-way valve (38) is connected to the outlet of the second oil pump (34), and the outlet of the third spring-pressed one-way valve (38) is connected to the inlet of the second separation selection valve (35); The first one-way valve (16) is installed between the first impurity indicator (14) and the proportional reversing valve (17), and the second one-way valve (39) is installed between the second impurity indicator (37) and the proportional reversing valve (17).

9. The method for detecting the anti-pollution capability of a hydraulic valve block of a hydraulic automatic transmission according to claim 1, characterized in that: The centrifugal separation module further comprises an oil cleaning pump (31) and a third one-way valve (32); the outlet of the third one-way valve (32) is connected to the oil tank (29); the inlet of the third one-way valve (32) is connected to the outlet of the oil cleaning pump (31), and the inlet of the oil cleaning pump (31) is connected to the oil cleaning tank (30); the oil cleaning pump (31) is connected to the industrial computer (42) via Ethernet (41).

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